Improvement in apparatus for separating borax, salt



, 0. HdJLDEN. Apparatus for Separating Borax, Salt, &c., from Water.

N0 155 943' Patented0 ct.13,1874.

- I MENTOR.

THE GRAPHIC CO. PHGYO-LIYHJQJI 4 PARK PLAOERLY UNITED STATES PATENT OFFICE.

OLIVER HOLDEN, OF NEW YORK, N. Y.

IMPROVEMENT IN APPARATUS FOR SE'PARATING BORAX, SALT, &c., FROM WATER.

Specification forming part of Letters Patent No. 155,948, dated October 13, 1874; application filed March 11, 1874.

To all whom it may concern:

Be it known that I, OLIVER HOLDEN, of the city, county, and State of New York, have invented certain Improvements in Apparatus for Separating Borax, Salt, &c., from Water, 850., of which the following is a specification:

This invention has for its object the separation of such substances as borax, salt, &c., from water and similar liquids by means of evaporation and electricity and the invention consists in the use of two conical-shaped cylinders, one within the other or upon the same axis, and mounted 011 suitable bearings in such a manner as to be revolved and with such connections as to be heated by steam, as calender rolls, and provided with such appliances as to produce electrical currents upon their surfaces to aid in the required separation, as will hereinafter be explained; and,

second, the invention also consists in mountin g the entire apparatus upon a pair of rockers or their equivalent, so that said cylinders may be tilted to vary their operations.

Figure 1 represents said apparatus in a longitudinal section. Fig. 2 is an end view, taken from the large end of the large cylinder or cone-shaped receivers.

Upon any suitable base or frame work, as at A, is mounted two supports or bearings, as at B B, for receiving and supporting an axis, as at O, and upon said axis or shaft is supported a metal cone or cylinder or a tube of conoidal shape, as at D, and this is made steam-tight as a boiler, and receives steam into its interior through the axis, which is hollow, and is constructed similar to the method of mounting calender-rolls. Upon the same axis a second cone or cylinder of similar shape, though considerably larger, as at E, is mounted and fastened, so as to revolve with the first, but its large end is placed to surround the small end of the cone or cylinder D, as shown at Fig. 1, and at a suitable point in the small end of the said outer cone or cylinder, as at F, there is an opening made, through which the substance to be treated is introduced or charged to the machine. Upon the inner surface of said cone or cy1indersay, at five points-are fastened wings or ribs G, projecting inward toward the center, to assist in carrying up the materials, so that they may fall upon the inner cone D, and at the larger end of said outer cone E at various points, as at A, are openings to allow the substance after treatment to fall out and leave the machine. Couplings with flexible packings, as at K, may be used to connect the steam-pipes with the hollow shaft or axis to the inner cone, and so as to permit the entire apparatus to be tilted upon the rockers L, which support the base of the machine.

Motion is given to the two cylinders in any suitable manner, as by'a belt or gearing or universal coupling. Upon various points of the said cones or cylinders are fastened certain metals, as at a and b, which are electropositive and electro-negative to the metals of which the cones or cylinders are composed, and in so doing an electrical action is established, which greatly assists in keeping the surfaces of the cones clean, and also assists in the separation of the borax, &c., from the water, &c., as the case may be.

The operation is to introduce the substances to be treated into the small end of the outer cone or cylinder, while the machine is at rest. Then turn on the steam to heat the inner cone, and set the machine revolving. The materials will be carried up toward the top of the large cone and then be allowed to fall upon the inner or small cone, which is heated by the steam, and is also electrically excited, and the result will be to separate, by evaporation and electrical action, the borax, salt, 850., from the semi-liquid mass as it travels by its own gravity toward the large end of the outer cone. When it is to be retarded or hastened in its action the cones may be tilted by the operator to suit the action desired, either to hasten the material through the operation or to delay it, as the case may be.

I therefore claim- The combination of the conical cylinder E, for holding the substance to be treated, with the conical cylinder D, arranged within the cylinder E, and heated by steam and operated on by electricity for electrically exciting the substance being treated, substantially as and for the object specified.

OLIVER HOLDEN.

Witnesses J OHN W. RIPLEY, BOYD ELIOT. 

